Yeah we've heard that the floor issue many times. not sure how to avoid that with the floor calibration. Maybe adding in a height adjuster of some kind to help.
There are 4 keys in the map and are color coated to match the lock. It may be a little dark to match. If you put the correct key up to the lock, it should unlock. Give it another go. Use the things around you to snag the keys or knock the key off (hint hint)...
Thanks for your kind words! :) We had fun developing this!
We also had the idea, although the demo is 'limited' , is having different wells to try with different levels of difficulty. sadly we didn't have time to make more than 1 well.